Aliphatic polyesteramide(PEA) with different molar ratio have been prepared from 6-aminocaproic acid (ACA) and polyethylene adipate (PEAD) synthesized by melt condensation of ethylene glycol (EG) and adipic acid (AA). The PEA was characterized by DSC, IR spectrophotometer, viscometer, colorimeter, and amino group determination. As ACA content in the polymer increased, its Tm, inherent viscosity, and the number of amino end group increased while its whiteness decreased. The polymer(PEA) having 90% ACA molar fraction was acid-dyeable and its Tm about 210$^{circ}C$. The whiteness of the PEA was better than that of other PEA polymer.